Rotary blower



` "UNITED STAI-ENT OFFCB.

XVM. B. BARNARD AND E. JORDAN, OF WATERBURY, CONNECTICUT.

ROTARY BLOWER.

Specification of Letters Patent No. 25,554, dated September 27, 1859.

To all 'whom 'it may concern:

Be it known that we, vWILLIAM B. BAR- NARD and EDMUND JORDAN, ofWaterbury, in the county of New Haven and State of Connecticut, haveinvented, made, and applied to use certain new and useful Improvementsin Rotary Blowers, which we term the Double Propeller Diaphragm Blower;and we do hereby declare that the following is a full, clear, and exactdescription of the construction and operation of the same, referencebeing had to the annexed drawing, making' part of this specification,wherein* Figure l is a sectional plan and Fig. 2 is a side elevation ofour said double propeller diaphragm blower.

Similar marks of reference denote the same parts.

Our said invention consists in the combination of double propeller fanswith an intervening diaphragm, applied within the case of the blower insuch a manner that the said propellers in being rotated cause the air topass through between the diagonal blades into the intervening space, andthe aforesaid diaphragm standing across this space at the line of theblowers mouth causes the air that would otherwise be carried aroundbetween these double propellers, to be deflected 0H through the mouthand trunk of the blower; our invention is thus distinguished from thoseblowers in which the air is driven off by centrifugal force only, andfrom those in which the diagonal position of the fan or propeller is themotive force applied to the air. 7e also mount our blower in such amanner that its case can be turned around to bring the mouth horizontal,inclined or vertical, without changing the position of the standards bywhich it is attached and sustained, and preserving the central posit-ionof the blower in the case.

In the drawing a a are standards attached to any suitable support ineither a horizontal vertical or inclined position. Y), Z), are boxes onsaid standards receiving the blower shaft c, that is driven in thedirection of the red" arrows by competent power applied to the pulley d.

The sides of the blower case c, are formed circular except where themouth f, passes off to the pipe or trunk conveying the air from theblower to the fire, and fr, are tie bolts or columns connecting thesides e, e, to each other, and confining the bent plate that is betweensaid sides and completes the blower case.

g, g, are columns between the frames a, a, or projecting flangestherefrom, at a distance from the center of the shaft c, correspondingto the radius of the blower case c, hence said circular blower caseresting on these supports g, g can be turned around into any desiredposition to bring the mouth f in the proper direction and the case be inposition relatively with the shaft c.

it, z, are bolts passing through the standards a, a, into, or pressingonto, the blower case e, e, to hold it in position when set.

7c, 7c, are the double propellers attached to the shaft c, by theflanges m, m, and the fans of said propellers stand in reverse inclineddirections on the respective sides as seen in Fig. l, so that therevolution of said fans in the direction of the red arrows causes theair to be forced by said inclined fans into the space between them, andthe centrifugal force also throws the air off into the case e. Therespective inclined fans (7c 7c) are made to lap about half way ontoeach other, and are connected together by the studs or braces z', z',thereby forming a series of mouths through which the air is forced inthe direction of the black arrows as said propellers, formed by theseinclined fans, revolve.

Z, is a diaphragm formed of such a shape as to set closely to the parts,but allow the propellers to revolve without coming in contact therewith,and said diaphragm extends from the mouth f to the shaft c, so as tocause all air that is forced into the spacebetween the propellers orrevolved around with the same, to be deflected through the mouth. Thusour blower will give a larger blast of air with less power and at a lessspeed than a y blower with which we are acquainted.

Having thus described our said invention In Witness whereof We havehereunto 'set what we clann and desire to secure by Letour signaturesthis ninth day of July 1859. l(

ters Patent s- Y J The diaphragm Z, in combination with the 5 revolvingpropeller or propellers 7a, to de- D Heet the blast to the mouth oropening f, as Witnesses: the blower revolves in the oase (e) sub-STEPHEN W. KELLOGG, stantially as set forth. CALVIN H. CARTER.

